Air-cooler for motor-cylinders.



No. 832,803. PATENTED OCT. 9, 1906. O. H. McKAY. A AIR COOLER FOR MOTOR CYLINDERS.

APPLICATION FILED HOV. 17,1904.

2 SHEETS-SHEET 1 Jrr err/0o Tllil'rresses:

PATENTED OCT. 9, 1906.

C. H. McKAY. AIR COOLER FOR MOTOR CYLINDERS.

APPLIUATION FILED NOV. 17.1904.

BETS-SHEET Z- w t I novel means for UNITED PATENT OFFICE.

AIR-COOLE R FOR MOTOR-CYLlNDERS-.

To all uihcmt it nmy concern:

Be it known that I, CHARLES H. MCKAY, of Fitchburg, in the county of Worcester and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Air-Coolers for Motor-Cylinders; and 1 do hereby declare that the following is a full, clear, and exact description of the same.

b This invention relates to motors which are designed particularly for use in connection with motor-vehicles; and itrelates particu larly t'o motors of the explosive type.

An object of this invention is to provide preventing overheating of the cylinder and for insuring a rapid radiation of the heat.

It is also an object of this invention to employ air for this purpose and-to provide novel means for directing the air in a predeter-- mined direction and over and through a predetermined area.

Finally, an object of this invention is to provide a device of the character noted which will'pos'sess advantages in points of simplicity, efficiency, and durability, proving at the same time comparatively inexpensive to produce and maintain.

With the -foregoing and other objects in view the invention consists in the details of construction and in the arrangement .and combination of parts, to be hereinafter more fully set forth and claimed.

In describing the invention in detail reference will behad to the accompanying drawings, forming part of this specification, wherein like characters denote corresponding parts in the several views, and in which- Figure 1 is a plan view of the motor-vehiole with a device embodying the invention applied thereto. Fig. 2 is an enlarged detail view of the cylinder and the cooling mechanism. Fig. 3 is a section on the line corre' sponding to the line 3 of Fig. 2 with parts of the mechanism omitted. Fig. 4 is a sectional view on the line4 of Fig. 2 with parts of the mechanismomitted. Figs. 5 and 6 are detail views of the hood on a small scale. In the drawings, 1 indicates the front axle,

.and 2 the wheels thereon; 3, the rear or driving axle, and 4 the wheels thereon,'and 5 the cross-strlps of the vehicle-body. Keyed-or otherwise secured to the axle 3 is the sprocket 6, over which passes the 'chain 7, which in turn passes over the sprocket 8, secured to the driving-shaft 9, which is suitably held by the bearings 10, attached to the vehicle-body.

Specification of Letters Patent. Application filed November 17.1 9o4. SeriaLNo. 233.107.

Patented Oct. 9, 1906.

The opposite end portions of the drivin v shaft are-provided with the balance-whee s 11 and 12. Centrally of its-length the driving-shaft is provided with the oppositely-extendin crank-hangers 13 14, to which are secured the ends of the pitmanrods 15 1.6.

The -0 posite end of each of the rods is at- V tache to a piston-head 17-, which works in the cylinder 18, which is suspended from one of the -cross-strips5 by astandard 19. The exterior surface of the cylinder is provided with the-longitudinal grooves or corrugations 20, which terminate a short distance from one end thereof. Within these grooves rest a series of copper free passage of air. Arranged .above and resting on the pipes 21 and interposed therebetween'is a second series of cop er pipes 22. These pipes are all inclosed within a copper sheathing 23, with the ends 24 communicating with the atmosphere and the ends 25 communicating with the interior of a hood or box26. The hood 26 is formed in two sections a and b, the engaging ed es of the sections being provided with the flanges 0, each flange having a plurality of apertures registering one with the other, through which the winged bolts d are adapted to pass in order that the sections may be removably secured tubes or pipes 21 for the one to the other, so that access can be easily and readily had with to meet any necessity of practice. The front the interior of the box' and back ofthe box or hood 26 are provided cylinder and to be secured thereto by the -screws. Suspended from another crossstrip 5 by a hanger k is a shaft m, which extends Within the box or hood 26, through the opening 6, and has secured thereon the fan-blades n. On the outer end of the shaft m is a pulley 27, over Which passes a belt 28, which in turn engages a larger pulley 29, keyed or otherwise secured to the end of a nal shaft 30, mounted in the bearings 31, attached to the cross-strips 5. This shaft 30 is rotated by means of a worm-gear 31 on the longitudidriving-shaft 9, which meshes with a gear on the said shaft 31. It is to be understood that the above-described elements and arrangements of parts are used in connectionwith both the cylinders.

To protect the pitnian-rodsand their connections with the crank-hangers of the drivver bears against a ing-shaft, a cover or shield 32 is rovided, said shield being secured .to the um er side of the vehicle-body in any )referrcd manner.

Near one end of each cylinder 18 are opposed apertures 33, whichhave formed at theirunion with the interior of the cylinder the annular shoulders 34, which limit the movement in one direction of the valve-heads 35. Fitting within the apertures are the ends of the pi ms 36, which have their end portions bevelm to form seats for the valve-heads 35. ()n the exterior of each of the pipes near the end thereof is forired the annular head or flange 37, which abuts the cylinder 18 and is secured thereto by the bolts The pipe is preferably curved and has its free portlon registering with the aperture.

Formed in each pi e is a housing or bishing 39, through whic passes the stem 40 of the valve 35. The outer or free end of the stem is provided with a head 41, and interposed between the head and the outer end of the bushing is a spring 42, said spring embracing the stem and being adapted to hold the valve normally closed or against the lieveled end of the pipe 36.

Suitably secured and depending from the vehicle-body is a curved arm 43, which has pivoted to its free end the lever 44, one end of which is adapted to contact with the cap 41 on the stem 40. The opposite end of the lecam 45, secured to the longitudinal shaft 30. To reduce the friction between the parts, the end of the lever engaging the cam is provided with the roller 46.

It is to be understood that one of the pipes 36 is intended to act as an inlet, while the other is intended to act as an outlet or exhaust, and in operation or practice it is to be understood that the same mechanism for opcrating both valves is used, as above described, although in the drawings said valveoperating mechanism is shown applied to but one of the valves.

In operation the rotation of the powershaft will be communicated'to the longitudinal shaft, and the longitudinal shaft being connected to the fan-shaft vwill cause the rotation of the said fan-shaft. The air compressed by the fans will be forced through the pipes 21. and 22, thereby car ing oil the heat and cooling said pipes, whiiili cooling action will be further'facilitated b the fact that the pipes and their cover are 0 copper, the heatconductive qualities of which are Well known. Further, the rotation of the longitudinal shaft will, by means of the valve-heads'35 and thereby perm it the expulsion of the exhaustases from the interior of the cylinder 18 an also operate the inletvalves to admit the explosive charge.

7 The construction, operation, and advantages will, it is thought, he understood from the foregoing description,-it being noted that various changes may be resorted to in the proportions and details of construction for successfully carrying the invention into practice without departin from the scope thereof.

Having thus fully escribed my invention, what I claim as new, and desire to secure by Letters Patent, is-

In combination, a cylinder, a hood secured to one end of the cylinder, pipes arranged lon itudinally of the cylinder on the exterior su 'ace thereof, certain of said pipes being partially embedded in the cylinder, said pipes communicating at one end'with the interior of the hood and at the opposite end with the atmosphere, a sheathing contacting with the pipes, said pipes and sheathing being of a eatconducting material, and suitable means within the hood. for creating an air-current through the pipes.

CHARLES H. MoKAY.

cams, operate the 

